Allectra is a manufacturer and supplier of SMA feedthroughs which are connectors for High and Ultra High Vacuum applications.

SMA stands for SubMiniature version A. It is a type of coaxial RF connector that is widely used in telecommunications, military and aerospace applications, and other electronic equipment that require high-frequency signals. The SMA connector was developed in the 1960s by Bendix Corporation.

The SMA connector is a threaded connector with a 50-ohm impedance and is designed to operate in frequencies up to 18 GHz or even higher, depending on the construction and quality of the connector. The connector is relatively small in size, making it suitable for use in applications where space is limited. The SMA connector is also known for its excellent electrical performance, high reliability, and durability.

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